Never trust your users. Here is the tip to remove spaces from string.
Run-If: 'FIELD' LIKE "% "
This remove space before:
Set-Field: zInt = LENGTH($FIELD$) Set-Field: Field = SUBSTR($FIELD$,0,zInt-1)
This remove spaces before and after string:
Set-Field: Field = LTRIM(RTRIM($FIELD$))
This remove all spaces from string:
Set-Field: REPLACE($FIELD$," ","")